Amell and Emily Bett Rickards, as well as Grant Gustin of “The Flash,” previously guest-starred as their characters on “Vixen.”

During the network’s panel during the Television Critics Association winter press tour, president Mark Pedowitz said he was hopeful “Vixen” could be ultimately fleshed out to be its own live-action series, or the character could join new “Arrow-“-“The Flash” spinoff “Legends of Tomorrow.”